Listen, I understand you're a fan of something and want to 'honor' something you love with your own content, and that's GREAT! It's amazing Game Grumps motivated you to make something of your own and I hope you keep motivated...
but why did you made this animation?
It's 2 guys sitting on the couch playing a game and having an exaggerated expression. This might as well have been the original recording. It didn't really add anything worth noting to the original clip; 2 guys on the couch playing a game (which to the viewer isn't exactly interesting), exaggerating an expression.
I'm not saying you can't make this interesting, take for example this SFM animation of the same audioclip here:
http://www. youtube.com/watch?v=omLve_vezbA
The author added dramatic music, some great lipsynching and emotion, even trying to break loose from the Sonic '06 aspect of it and change the context. Your animation on the other hand all that much. It stays far too faithful to the source material and the only thing I would MAYBE consider an addition is one or two faces that have a really grotesque appearance.
Now, get me wrong, I can see you made this with lots of love and let my review let you down. I would love to see you come up with more and original content :)